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### - u -

- undefinePen() : QCPScatterStyle
- unicodeFraction() : QCPAxisTickerPi
- unicodeSubscript() : QCPAxisTickerPi
- unicodeSuperscript() : QCPAxisTickerPi
- unregisterBars() : QCPBarsGroup
- update() : QCPAxisRect , QCPColorScale , QCPLayout , QCPLayoutElement , QCPPolarAxisAngular
- updateAxesOffset() : QCPAxisRect
- updateColorBuffer() : QCPColorGradient
- updateLayerIndices() : QCustomPlot
- updateLayout() : QCPLayout , QCPLayoutGrid , QCPLayoutInset , QCustomPlot
- updateLegendIcon() : QCPColorMap
- updateMapImage() : QCPColorMap
- updatePosition() : QCPItemTracer
- updateScaledPixmap() : QCPItemPixmap